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Finding the Fourth Proportional to 340,778.95, 511,168.35 and 91,460.95

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Solution

The fourth proportional to 340,778.95, 511,168.35 and 91,460.95 is: 137,191.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,778.95 : 511,168.35 = 91,460.95 : x
  2. Step 2: Convert to fraction form
    340,778.95/511,168.35 = 91,460.95/x
  3. Step 3: Cross multiply
    340,778.95x = 511,168.35 × 91,460.95
  4. Step 4: Simplify right side
    340,778.95x = 46,751,941,965.99
  5. Step 5: Solve for x
    x = 46,751,941,965.99/340,778.95
  6. Step 6: Final answer
    x = 137,191.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.